Patent US 3562464A

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Patent number US 3562464A
Title Cam actuated switch having movable and fixed contacts on circuit board
Inventors Howard Vollum, Willem H Verhoff, Tony Sprando
Company Tektronix Inc
Filing date 1968-10-07
Grant date 1971-02-09

This patent describes the cam switches that Tek introduced toward the end of the 1960s.

See also Patent 3,584,174 covering the back-lit switches used in 7000-series scopes/plugins and other instruments, which also use low-inductance spring contacts on PCBs.